After much searching and agonizing I have found a local place that sounds very easy and possible for our Covid tests. We had looked at CVS (apparently not available here; possibly at 13 days out) and Walgreens--only can sign up 5 days out, as well as possibilites at the airport or in Fort Lauderdale, as well as buying the monitored tests.
I called a local convenient clinice (walk-in, urgent care type of clinic) and they assured me that we can just walk in for our rapid antigen test
Because we have a cruise in December out of Fort Lauderdale, and our travel schedule will require us to be tested there rather than before leaving home for Florida, I began keeping a list of test sites in and around Fort Lauderdale as people posted them here on CC. This is the list of places, in addition of course to CVS and Walgreens, and the FLL Airport (I've read here that only departing pax can be tested, but I've also read that arriving pax can be as well, so please check to be sure).